Originally Posted by butterflywing
on the flat rate boxes is there ANY limit on weight? can you stuff in whatever you can?
There is no limit on weight if the box is being shipped within the U.S. When used internationally, the small box has a limit of 4 lbs ($12.95 postage) and the bigger box has a limit of 20 lbs ($41.95 postage).
If you scroll back a little in this thread, you will find a link to the post office website with information about international mailings.